(literary) to reveal; to expose (one's chest, etc.)

(bound form) belly; stomach; the part of the body between the chest and the pelvis

(bound form) honest; straightforward; open-hearted, as in 坦率 tǎn​shuài or 坦白 tǎn​bái

(bound form) the center of one's thoughts or feelings; one's mind or inner intentions